Milk strainer



Feb. 26, 1929. v

H. E. DUKE MILK STRAINER Filed July 25, 192'? FFZ Patented Feb. 26, 19 29.

HARVEY E. DUKE, or

rrso sTArss PORTLAND, OREGON,

MILK STRAINER.

Application filed July 25,

This invention relates generally to the dairymans art, and especially to a type of milk strainer adapted to be inserted in pipe lines through which milkpasses.

The first object of this invention-is to provide an exceedingly simple and eflicient form of strainer which can be inserted into a milk pi pe line through which milkispassing either byrgl'fl ityor by a pumping act on.

lhe second ObJGCl; is to prov de a strainer which willeiiiciently and quickly remove all foreign substances from the milk. without any additional labor on the part of the opera ator and at a very small expense when compared with the larger present day straining apparatus. 1

The third object is to so construct the device that it can be easilyassembled or taken apart for cleansing purposes.

The fourth object is to so construct the device that a large area will be available for filtering and that tliefiltering medium is fully supported and reinforced to avoid any possibility of the strainers being torn and 25 solid substances passing through same. i These, and other objects, will become more apparent from the specification following as illustrated in the accompanying drawing in which: i i I Figure 1 is a longitudinal section through the device. Figure 2 is a transverse section taken along the line 2' 2'in' Figure 1. Similar numbers. of reference refer to si.m-' ilar parts throughout the views. Referring in detail to the drawing, the device i s intended to be inserted into any; pipe line between the terminals which form the connections for the unions 11. A gasket 12 is placed between the members 10 and 11. Threaded into one union 11 is the end 13 of a funnel-shaped outlet 14: provided with a flange 15, preferably ground to a joint. The flange 15 also has a longitudinally pro-, jecting annular flange 16, and the union between the members Hand 15 is preferably braced with ribs 17. 1 Across the diameter of the flange 16 is placed a rod 18. Against theedge ofthe flange 16 is placed a perforated metal strai1ier 19 which also bears against the rod 18 and is supported thereby. A circular piece of cloth, or other filtering medium 20, is placed over the outside of the member 19 and extends beyond the'outside of the flange 15.

The inlet portionof the strainer consists of a somewhat funnel-shaped inlet member 1927. Serial at. 208,184.

21 having a shoulder 22 formed in the end thereof wherein can seat a second strainer 23'.

ne member 21 has a projecting. flange 24 which extends beyond theshou'lder 22, and is also preiterably ground to a seat; with the face of the flange 15. The flange 24; is braced to themember21 by means of the ribs 25 to \\'l'llCl1 are attached the hinged clamps 26 which are operated by the thumb screws 27. [the meuihc E21 joined to its respective-part 10 by means of the coupling 28;

In operationwhen a pump is used to pass I themilk through thestrainer it is preferably placed in theposition illustrated, namely with tie milk flowing upwardly through the strainer; andivhen'employed with a gravity feed it is sometimes preferable to reverse this condition, namely to have the milk 7 pass downwardly through the strainer.

t can be seen that when in the position;

shown in Figured that any solid particles tOUClIHl the filtering medium will be lessa 3t =2 Q l to remain in an obstructing position than where the milk passes downwardly through the" strainer. Obviously, even when used with gravity it will be possible to maintain the upward flow of milk by the introduction of a return bend in the line. I

I am aware that many forms of milk strainers have been constructed in the past, in most cases the same being'of alarge size and at a cost which rendered same prohibitive to the average dairyman, the appended claim is therefore directed to a novel form of strainer which. isespecially applicable to single lines of pipe.

. 1 claim: I I I i In a milk stra ner, the combination of a circular fabric strainer; a perforated metal strainer on each side of said fabric strainer of a smaller diameter than said fabric strainer; a funnel-shapedinlet member having a flange formed on its outer edge having a recess formed in said flange to receive all.

of said strainers, thQ'POItlOIl of said fabric strainer projecting beyond its metal strainer resting against said flange; a funnel-shaped 'outletmemberhaving a flange correspond .ing with the flange on said'inlet member; an annular ring PIOJGCtIDg from the flange on said outlet member into the recess on said inlet member; and clamp means across said flanges whereby a liquid-tight joint is formed between said funnel-shaped members.

-, HARVEY DUKE}. 

